Results 11 to 20 of about 21,532,810 (248)

Non-Orthogonal Multiple Access for Unmanned Aerial Vehicle Assisted Communication [PDF]

open access: yesIEEE Access, 2018
The future wireless networks promise to provide ubiquitous connectivity to a multitude of devices with diversified traffic patterns wherever and whenever needed.
Muhammad Farhan Sohail   +2 more
doaj   +2 more sources

Capacity analysis of reservation-based random access for broadband wireless access networks [PDF]

open access: yes, 2009
—In this paper we propose a novel model for the capacity analysis on the reservation-based random multiple access system, which can be applied to the medium access control protocol of the emerging WiMAX technology.
Vinel, A, Turlikov, A, Staehle, D, Ni, Q
core   +6 more sources

Turbo receivers for interleave-division multiple-access systems [PDF]

open access: yes, 2009
In this paper several turbo receivers for Interleave-Division Multiple-Access (IDMA) systems will be discussed. The multiple access system model is presented first. The optimal, Maximum A Posteriori (MAP) algorithm, is then presented.
Cristea, Bogdan Eugen   +6 more
core   +1 more source

Two-Stage Non-Orthogonal Multiple Access Over Power Line Communication Channels

open access: yesIEEE Access, 2018
Non-orthogonal multiple access (NOMA) has recently been proposed for dual-hop cooperative relaying power line communication (PLC) systems. Unlike conventional NOMA-PLC schemes which deploy NOMA only at the relay, this paper proposes to enhance the ...
Khaled M. Rabie   +4 more
doaj   +1 more source

Joint power control and user grouping for uplink power domain non-orthogonal multiple access

open access: yesInternational Journal of Distributed Sensor Networks, 2021
Orthogonal multiple access schemes based on assignment of communication resource blocks among multiple contenders, although widely available, still necessitate an upper limit on the number of concurrent users for minimization of multiple-user ...
Bilal Ur Rehman   +6 more
doaj   +1 more source

Multiple Access Techniques for Bipolar Optical Code Division in Wireless Optical Communications

open access: yesIEEE Access, 2020
In this paper, multiple access techniques for bipolar optical code division are proposed for application in wireless optical communications. First, several fiber Bragg gratings (FBGs) and optical circulators are used to encode optical signals.
Hsu-Chih Cheng   +4 more
doaj   +1 more source

Adaptive Cooperative Non-Orthogonal Multiple Access-Based Power Line Communication

open access: yesIEEE Access, 2019
This paper proposes an adaptive cooperative non-orthogonal multiple access (NOMA) scheme for power line communication (PLC) networks, in which the source superimposes the data symbols to two users.
Honghong Pu   +3 more
doaj   +1 more source

Time slot‐split NOMA with resource allocation in full‐duplex cooperative communications

open access: yesIET Communications, 2021
This paper presents a time slot‐split non‐orthogonal multiple access (TSS‐NOMA) scheme for full‐duplex (FD) cooperative communication systems to improve resource utilisation.
Xuan Wang, Yi Liu, Ying Ma, Hailin Zhang
doaj   +1 more source

MIMO Multiple Access Channels with Partial Channel State Information [PDF]

open access: yes, 2010
The increasing demand for wireless communication systems has been the starting point for many research activities and discussions about the best way to make a cleaver usage of the available spectrum and the available power, in order to satisfy the ...
Aubry, Augusto
core   +1 more source

A low complexity user scheduling algorithm aimed for the maximum number of active users in NOMA system

open access: yesIET Communications, 2021
User scheduling algorithms in non‐orthogonal multiple access (NOMA) have attracted much attention to improve the performance of the communication system. Here, a low complexity user scheduling algorithm aimed for the maximum number of active users in the
Chengyi Liu, Geng Chen, Song Xing
doaj   +1 more source

Home - About - Disclaimer - Privacy